japanese/ebview-gtk2: Fix crashes immediately after startup
Since japanese/ebview was removed in 2014, remove CONFLICTS.
Switch from REINPLACE_CMD to patchfile.
PR: 297153
Approved by: fluffy (mentor)
Co-authored-by: mce
(cherry picked from commit e1c65a93e348dddf2ab5a5b099f4d2fae262d0b2)